I don't think word counts are good measurements of a writer's ability. 1,000 words a day is good for anyone, I don't care how seasoned they are. 500 is good. 100 is good (though editing as you go along would be very necessary.) 10,000 a day? Sorry, I have problems believing anyone could sustain that who wasn't a total hack.

That LKH constantly brags about the amount she writes is a total hack move. Valuing wordcount rather than quality is the mark of an assembly-line writer, not a good writer. It's hilarious because she brags about how high her output is when it isn't all that high, which means she even fails at being a true-blue hack.